Structure 26194059 · Grant County, SD

Us012 over Ck

Carries Us012 over Ck, 1.9 SE Jct Sd 123.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
22 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 22 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built199729 years old
Length21.7 ft6.6 m
Daily traffic1,470counted 2024
Last inspectedNovember 2024every 48 months

Location

StateSouth Dakota
CountyGrant
Location1.9 SE Jct Sd 123
CarriesUs012
CrossesCk
Coordinates45.24123, -96.83436

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length21.7 ft (6.6 m)
Max Span10.5 ft (3.2 m)
Deck Area80.5 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic1,470 (2024)
Truck Traffic31%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000026194059

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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